[throwaway48476]

The single best prevention for viruses is an adequate amount of quality sleep.

[sofixa]

I'd love to see some research on how quality sleep helps with, say, Ebola.

[throwaway48476]

Sleep is primarily preventative, as it plays a role in the immune system. Personally, I haven't been sick in many years and when other people are getting sick I just get tired and sleep a few more hours than usual.